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ATI TEAS 7 CHEMISTRY/TEAS CHEM ATI 7 APPROVED QUESTION AND ANSWERS LATEST
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ATI TEAS 7 CHEMISTRY/TEAS CHEM ATI 7 APPROVED QUESTION AND ANSWERS LATEST
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ATI TEAS 7CHEMISTRY/TEAS
CHEM ATI 7
APPROVED
QUESTION AND
ANSWERS LATEST
2023
1842
, lOMoAR cPSD| 26961842
ATI TEAS 7 Chemistry Questions and answers 2022
Matter
Anything that has mass + volume
divisions of matter pure
substances and mixtures
Pure Substance
A sample of matter, either a single element or a single compound, that has definite chemical and
physical properties
EX: O, H, CL, ( elements )
Compounds: H20, NaCL definite
properties: always the same
Heterogenous mixtures are...
mixtures that are not uniform throughout
Oil and water
- creating a distinct boundary Homogenous mixture
example a mixture in which the composition is uniform
throughout salt water
Is blood homogeneous or heterogeneous? blood
under microscope is heterogenous regular
blood is homogenous
Mass
A measure / quantity of the amount of matter in an object
Volume
The amount of space an object takes up weight
measurement of the gravitational pull on a object
Downloaded by DENIS MWAI
(denismwais@gmail.com)
, lOMoAR cPSD| 26961842
- greater the gravitational pull on a object the more it will weigh
will the weight of a space ship change yes will the mass of a
spaceship change no
Sub-atomic particles protons,
neutrons, electrons
Protons
Positively charged particles Neutrons the
particles of the nucleus that have no charge
Electrons
Negatively charged particles
Atoms smallest unit of matter
What is the center of an atom?
protons and neutrons Where
are electrons located?
orbitals outside the nucleus Elements any substance that cannot
be broken down into simpler substances - only the specfic atoms
can create the element ex: Element Iron only has Iron atoms
Diatomic elements are H2, N2, O2, F2,
Cl2, Br2, I2 these have only have two
atoms in PAIRS
All diatomic molecules have
Non Polar covalent bonds between the same atoms
Molecules two or more atoms joined together
Diatomic elements are Molecules Any other atoms
jointed are molecules ex: H2O, CH4, H2, N2
Downloaded by DENIS MWAI (denismwais@gmail.com)
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